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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 329 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.7 + 13 =
  2. 2.Pooja has 9 shells and gets 2 shells more. How many shells does Pooja have now?
  3. 3.2 + 3 + 9 =
  4. 4.Rohan has 15 balls and gets 3 balls more. How many balls does Rohan have now?
  5. 5.11 + ? = 15
  6. 6.4 + 7 + 1 =
  7. 7.? + 8 = 13
  8. 8.Ananya has 11 bananas and gets 4 bananas more. How many bananas does Ananya have now?
  9. 9.3 + 4 =
  10. 10.6 + 6 + 1 =
  11. 11.There are 3 yellow balloons and 15 white balloons. How many balloons are there in all?
  12. 12.? + 2 = 4
  13. 13.12 + ? = 19
  14. 14.There are 9 green balls and 11 white balls. How many balls are there in all?
  15. 15.13 + 4 =
  16. 16.5 + ? = 11
  17. 17.2 + 3 + 5 =
  18. 18.4 + 1 + 11 =
  19. 19.12 + 3 =
  20. 20.3 + 5 =
  21. 21.5 + 3 =
  22. 22.Priya has 10 balls and gets 9 balls more. How many balls does Priya have now?
  23. 23.Aditya has 5 marbles and gets 10 marbles more. How many marbles does Aditya have now?
  24. 24.3 + 2 + 10 =
  25. 25.There are 6 red flowers and 14 blue flowers. How many flowers are there in all?
  26. 26.There are 3 yellow kites and 11 pink kites. How many kites are there in all?
  27. 27.Karan has 10 pencils and gets 6 pencils more. How many pencils does Karan have now?
  28. 28.Aarav has 6 laddoos and gets 12 laddoos more. How many laddoos does Aarav have now?
  29. 29.6 + 3 + 2 =
  30. 30.6 + 1 + 7 =
  31. 31.There are 10 green beads and 10 blue beads. How many beads are there in all?
  32. 32.There are 9 red balls and 4 white balls. How many balls are there in all?
  33. 33.4 + 6 + 10 =
  34. 34.Nisha has 5 laddoos and gets 6 laddoos more. How many laddoos does Nisha have now?
  35. 35.10 + 10 =
  36. 36.? + 1 = 12
  37. 37.18 + 1 =
  38. 38.There are 3 white kites and 17 yellow kites. How many kites are there in all?
  39. 39.6 + 4 + 2 =
  40. 40.13 + 6 =

Answer key

  1. 20
  2. 11
  3. 14
  4. 18
  5. 4
  6. 12
  7. 5
  8. 15
  9. 7
  10. 13
  11. 18
  12. 2
  13. 7
  14. 20
  15. 17
  16. 6
  17. 10
  18. 16
  19. 15
  20. 8
  21. 8
  22. 19
  23. 15
  24. 15
  25. 20
  26. 14
  27. 16
  28. 18
  29. 11
  30. 14
  31. 20
  32. 13
  33. 20
  34. 11
  35. 20
  36. 11
  37. 19
  38. 20
  39. 12
  40. 19

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